Machine for threading wire



(No Model.) 2 Shets-Sheet 1. L. GODDU.

y MACHINE FOR THRBADING WIRE.

No. 351,372. Patented Oct. 26, 1886;

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(No Model.)

L. GODDU.

MACHINE FOB. THREADING WIRE.

No. 351,372. 4 Patented 0012.26, 1886.

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UNITED STATES FEICE.

PATENT LOUIS GODDU, OF WINCHESTER, ASSIGNOR TO JAMES XV. BROOKS,TRUSTEE, OF CAMBRIDGE, MASSACHUSETTS.

MACHINE FOR THREADING WIRE.

SPECIFICATION forming part of Letters Patent No. 351,372, dated October26, 1886.

Serial No. 168,007.

(No model.)

To all whom it may concern.-

Be it known that I, LOUIS GoDDU, of fin chester, county of Middlesex,and State of Massachusetts, have invented an Improve ment in Machinesfor Threading \Vire, of which the following description, in connectionwith the accompanying drawings, is a specification, like letters on thedrawings representing like parts.

This invention has for its object the production of an improved machineby which to form threads on wire, the latter being applicable for bootand shoe and other work.

In accordance with my invention the wire is acted upon at substantiallydiametricallyopposite points by the annularly-grooved peripheries of twopressure-rollers on axes inclined with relation to the longitudinalcenter of the wire being acted upon, the axes of the said wheels beingmore or less inclined with relation to the longitudinal axis of thewire, ac cording as the pitch of the thread is to be more or less, theaxes or shafts of the pressure-rollers being carried by a rotatinghollow shaft, and being provided with bevel-gears driven by teeth on asleeve surrounding the said'hollow shaft, and having a slower speed ofrotation, the parts being so moved as to compel the pressure wheels torevolve with their shafts about the wire, the said wheels during suchrevolution rotating about their own axes, the peripheries of thepressure-wheels rolling around and in contact with the periphery of thewire, but without rubbing friction thereon, such contact and method ofoperation resulting in so pressing the wire as to cause the materialdisplaced by the annular projections of the pressure-rollers to bethrown out, so as to fill the annular grooves between the annu-' o larprojections of the said rollers, and this without removing any of themetal of the wire, as-would be the case if the rollers had a more rapidmovement about their own axes, so as to cause them to cut into thesurface of the wire and plow up the metal, forcing apart of it alonglongitudinally, as has been done. The wire as it is threaded is takenaway by drawing-rollers which grasp it, and the wire is wound upon aspool substantially as in a patent of the United States granted to me,No.

This invention is an improvement on the class of machine represented inUnited States Patent No. 181,010, and also on the class of machinerepresented in my application, Serial 5 No. 141,936, filed September 1,1884.

Prior to this invention rolls have been employed for pressing or formingthreads on rods and screw-blanks, the said rolls being positivelyrotated and acting against the said rods or blanks; but prior to myinvention I am not aware that the axles carrying the rotating rolls haveever been revolved about the wire, thus giving to the said rolls aplanetary motion about the axis of the wire.

My invention in machines for threading wire consists, essentially, in atube or guide for the wire and a pressure -roll revolving about the wireto indent a thread thereon, the roll being set at an angle with relationto the axis of the wire and rolling about the wire'in the direction ofthe thread thereon, combined with means to automatically rotate the saidpressure-roll on its own axis at such a rate of speed as will cause theroll in contact with the wire to travel about it without causingtwisting strain.

Figure 1 is a top or plan view of a wire threading machine containing myinvention; Fig. 2, a section thereof inthe line a; 00,- Fig. 3, apartial. section of Fig. 1 in the line 00, the winding mechanism beingomitted; Fig. 4, a section in the line :0 m looking toward the left; andFig. 5 shows a piece of wire provided for part of its length with athread cut in accordance with my invention.

The framework A, of proper shape to con tain or support the workingparts, has a shaft,

A, which is driven from any suitable source. This shaft, provided with abclt-pulley, A has a gear, A which engages. a pinion, A, connected withan intermediate gear, A*, loose on a stud, A, of the framework, the saidgear engaging and driving a gear, B, loose on the shaft or stud O, thelatter engaging a toothed 5 gear, 0, fast on and rotating the hollowshaft 0 mounted loosely in the hollow stud 0 provided with a flange, a,and having one end extended through an upright of the framing andprovided with a setnut, a.

The hollow shaft 0 is shown as having out side of it wings orprojections 4 and 5, two

, such projections being shown.

The wing or projection 4 receives a shaft or axle, 2, and the wing orprojection 5 a shaft or axle, 3, the said shafts or axles havingattached to them, respectively, the pressure-rolls b b.

The hollow stud O has screwed into it in an adjustable manner thetubular wire-guide 0*, it being confined in-place by a set-nut, a. Thefront end of the guide 0 will preferably have a nose, aflcf steel,screwed into it, and made tapering externally, the nose supporting thewire close to the point where the pressure rollers or wheels b I) actupon the wire.

The hollow shaft 0 or pressure-roller-carrying frame is reduced at oneend to form a shoulder, 12, and the end of the reduced part is threaded,and the gear 0 is screwed thereon, the hollow shaft being surroundedbetween the said shoulder and gear by the sleeve E.

-The hollow shaft 0 is held upon the stud C by a nut, a, screwed uponthe reduced end of the stud and overlapping the end of the shaft, asshown in Fig. 2. I

The gear B, having rather coarse teeth, has at one side a second gear,D, of slightly less diameter and having finer teeth, the latter gearengaging the gear E on the hollow sleeve E. The gear D is shown asforming an integral part of the gear B, so as to rotate in unison withit, each gear B D,- however, driving the gears O and E, engaged by them,at different speeds. F

While the hollow shaft 0 and the wings or projections holding the shafts2 3 are revolved about the hollow stud G the bevel-gears F F, inengagement with the bevel-toothed gear (Z, cause the rotation of theshafts 2 and 3, each about its own axis, the peripheries of thepressure-rolls?) bacting against the periphery of the wire at twoopposing points and traveling about the wire, the surface speed of thesaid wheels I) b, in contact with the wire, being determined by therotation of the shafts 2 and 3 about their own axis, and by therevolution of the said shafts with the hollow shaft 0 The surface speedso gained for the rolls is such as to enable the peripheries of therolls 2) b, in contact with the surface of the wire, to roll about andindent the wire with" out twisting it.

The shaft A has on it a worm, a, which engages and drives a worm-gear,c, on the end of a shaft, 0 having at its upper end one of thewire-drawing wheels, 0", the latter being pro- Vided with an annulargroove, and having cooperating with it a second like wheel, a, on ashaft, 0 having atoothed gear, 0, engaged and driven by a gear, 0 on theshaft 0". The block H, which receives loosely the bearings H H for theshafts c 0 has a stem or extension, H which is extended through anupright on the frame A, andsecured in place by a nut, H

The shafts and rolls for drawing the wire through the guide-tube andcausing it to travel between the rolls are substantially such as shownin my Patent No. 167,760, September 14, 1875.

The threaded wire will preferably be led through a guide, 0, (see Figs.1 and 2,) and a guide, 6, and thence to aspool, O. The spool O, shaft1?, worm-gear S Worm T wormgear T", bearing T cam U, and elbow-lever Vare .means of the gears F F and the teeth d of the sleeve E, the latterbeing rotated at a different speed from that of the hollow shaft, thepressure-rolls are rotated as they are revolved about the wire, so thatthe surface speed of the pressure-rollers about their own axes is justequal to the speed of revolution of the rollers about the wire, whichresults in causing the pressure-rollers to roll steadily about the wire,

thus avoiding twisting strain, and as the result the Wire is pressedhardbetween rolling-surfaces, and that part of the wire opposite the groovesin the pressure-rollers is-made to rise, while the parts of the wireacted upon by the annular projections of the pressure-rollers are sunk,thus forming upon the wire awaved but spiral surface, like'ascrew-thread; but in the formation of the thread the skin of the wire isnot broken or removed, or, in other words, the stock is not cut out andwasted.

Fig. 5 showsa piece of wire partially th readed in my machine.

To lubricate the surfaces between the stud O and the hollow shaft, Ihave provided an oil-cup, as at lWI.

The pressure-rollers may have one or more projections, and theprojection or projections will be of greater or less width, according tothe fineness of the thread to be produced, and of greater or less pitch,according to the pitch desired.

In another application, Serial No. 141,936, I have shown three rotatingdisks, which are set at an inclination to the axis of the wire accordingto the pitch of the thread to be produced, and I have therein providedmeans whereby the edges of the disks roll over and indent the wire,forming threads by pressure alone, instead of by removing part of thestock. In the said application I have provided means to rotate the wire,and the bearings for the shafts of the disks are stationary, but thedisks are rotated at a surface speed corresponding with the surfacespeed of the wire.

I clai1n- 1. In a machine for threading wire, a tube or guide for thewire, and a pressure-roll revolving about the wire to indent a threadtherein, the roll being set at the proper angle with relation to theaxis of the wire to roll in the direction of the thread, combined withmeans,substantially as described, tosautomatically rotate thepressure-roller on its own axis at such a rate of speed as to roll uponthe wire without causing twisting strain, substantially as described.

2. In a machine for threading wire, a rotary tube or hollow shaftthrough which the wire passes, and opposing pressure-rolls carried byand revolving with said shaft around the wire to indent the thread, therolls being set at such an angle with each other and with the axis ofthe wire as to roll in the direction of the thread, combined with means,substantially as described, to automatically rotate the pressure-rollersupon their own axes at such a rate of speed as to roll upon the wirewithout causing twisting strains, substantially as and for the purposedescribed.

3. The combinatiomin a machine for threading wire by pressure, of twogrooved pressurerolls set at an angle to the wire and to each other, anda rotary hollow shaft having bearings for the pressure-roll shafts,therolls being automatically revolved, by means substantially as described,with relation to the wire, and also at the same time rotated about theirown axes, by means substantially as described, whereby thepressure-rolls are made to pass over the surface of the wire,substantially as described.

4. The combination,in a machine for threading wire by pressure, ofshafts having grooved pressure-rollers set at an angle to the axis ofthe wire and to each other, and a rotating hollow shaft provided withbearings for the shafts carrying the pressurerollers, thepressurerollers being revolved with relation to the wire, and beingrotated about their own axes during their revolution,whereby thepressurerollers are made to roll over the surface of the wire,substantially as described.

5. The combination,in a machine for threading wire by pressure, of anose to hold the wire to be acted upon, shafts having groovedpressure-rollers set at an angle to the axis of the wire and opposingeach other, and a rotating hollow shaft provided with bearings for theshafts carrying the pressure-rollers, the pressure-rollers beingrevolved with relation to the wire, and being rotated about their ownaxes during their revolution,whereby the pressurerollers are made toroll over the surface of the wire, substantially as described.

6. In amachine for threading wire, a nose to hold the wire to be actedupon, shafts having grooved pressure-rollers set at an'angle to the axisof the wire and in opposition each to the other, and a rotating hollowshaft provided with bearings for the shafts carrying thepressure-rollers,the pressure-rollers being revolved with relation tothe wire, and being rotated about their own axes during theirrevolution, whereby the pressure-rollers are made to roll over thesurface of the wire, combined with rolls to act upon and move the wirelongitudinally, substantially as described.

7. In a machine for threading wire, a nose to hold the wire to be actedupon, two shafts having grooved pressure-rollers set at an angle to theaxis of the wire and in opposition each to the other, eachpressure-roller supporting the wire at opposite sides, and a rotatinghollow shaft provided with bearings for the shafts carrying thepressure-rollers, the pressure-rollers being revolved with relation tothe wire, and being rotated about their own axes during theirrevolution,whereby the pressurerollers are made to roll over the surfaceof the wire, combined with rolls to act upon and move the wirelongitudinally,and with a spool and means to rotateit, to wind the saidthreaded wire upon the spool, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS GODDU.

IVitnesses:

GEO. IV. GREGORY, B. J. NOYES.

